Water-motor.



A- W- SWANBERG.-

WATER MOTOR.

APPLICATION FILED JUNE 26, 1912.

Patented May 12, 1914.

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Fly 2 WTNEs 1:6

A. W. SWANBERG.

WATER. MOTOR.

APPLICATION FILED JUNE 26, 1912.

Patented May 12, 1914.

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UNITED STATES PATENT @FFIQE.

ARTHUR W. SWANBERG, OF MINNEAPOLIS, MINNESOTA, ASSIGNOR OF ONE-THIRD TO GEORGE W. DAYTON AND ONE-THIRD TO MAGNUS NORMAN, BOTH OF ST. PAUL,

MINNESOTA.

WATER-MOTOR.

Specification of Letters Patent.

Patented May 12, 1914.

Application filed. June 26, 1912. Serial No. 706,103.

To ah whom it may concern Be it known that I, ARTHUR IV; Swan- BERG, a citizen of the United States, resldlng at Minneapolis, in the county of Hennepln and State of Minnesota, have invented certain new and useful Improvements in ater-Motors, of which the following is a specification.

My invention relates to improvement-s 1n turbine motors, its object being to provide a construction in which the maximum efiiciency is secured and in which the loss of efliciency resulting from back pressure is obviated.

To this end the invention consists in the features of construction, combination, and arrangement of parts hereinafter described and claimed.

In the accompanying drawings forming part of this specification, Figure 1 is a side elevation of my invention partly broken away and in section; Fig. 2 is a section on line a:0 of Fig. 1; Fig. 3 is a section on line 3 g of Fig. 1; Fig. at is a detail interior view of part of the annular piston chamber of the device showing an inclosed back pressure wall; Fig. 5 is a plan view of one of the piston blades forming part of the invention; Fig. 6 is a side view of the same; Fig. 7 is an end view collapsed and broken away; Fig. 8 is a side view of a controlling guideway for the piston blades; Fig. 9 is a sectional view on line 20-10 of Fig. 8; Fig. 10 is a detail view, broken away, of part of the piston chamber wall; and Figs. 11 and 12 are sectional views, broken away, of the piston chamber portion of the motor.

Referring to the drawings A represents the outer casing of the motor. Mounted upon a central axle 2 having end journal support 3 is a supporting framework 4. In the form shown in Figs. 1 and 3 the casing is shown in the form of two opposed side plates 5 with outwardly curved ends 6 to constitute the inner half of the surrounding annular piston cylinder, an outwardly curved plate 7 being secured to the ends of the side plates 5 by bolts 8 to constitute the piston chamber B. The inner ends 9 of the plate 5 are outwardly turned within the bearing 10 to allow the axle to rotate within the bearing and casing. Carried by the axle and projecting outwardly between the side plates 5 of the casing is a piston or plate supporting wing 11. Secured upon the outer edge of the wing 11 as by rivets 12 is a plurality of piston blades 13. The blades 13 are each centrally split, the halves of each blade having hinge connect-ion 1 1. The blades as shown fill the annular chamber B to constitute pistons there-in. Opening into the piston chamber on the one side of the motor is an inlet 15 which may be connected by the coupling 16 with a pipe 17 f0rmmg the inlet for the source of water supply. The pipe 15 is preferably contracted as shown adjacent the piston chamber. Leadmg from the piston chamber upon the opposite side of the motor at a point above the inlet port is a suitable discharging port 18 for the water.

Having hinge support 19 in a recess or pocket 20 in the outer wall of the piston chamber is a safety device or back pressure wall 21 in the form of a flap filling the piston chamber. The flap 21 thus serves as an end cylinder wall back of the inlet water opening rendering effective the water pressure against the blades.

For the purpose of collapsing the blades in their passage from the discharge port to the back pressure wall and overcoming the results of back pressure I provide the col-- lapsing guideway shown specifically in Figs. 8 and 9. The collapsing guideway is in the form of two opposed converging plates 22 forming an intermediate passageway through which the piston blades travel. The piston blades enter the divergent ends of the guideway immediately after passing the discharge port 18, being collapsed by said converging plat-es so as to pass throughthe outlet end of the guideway in a collapsed position.

The converging ends terminate adjacent the flap 21 allowing the collapsed blades as they pass the flap to drop by gravity into extended position filling the piston chamber.

The flap 21, as shown in Fig. 1, when standing in position filling the chamber eX- tends forwardly into contact with the inner wall of the chamber to check any back flow. The flap 21, as will be apparent, serves as a back pressure or end wall opposed to the particular piston blade receiving the water pressure from the inlet port, so that the relative positioning of the flap with reference to the inlet port, by increasing or decreasing the chamber space formed by the flap and passing piston blade, relatively in creases or decreases the power resulting from the water pressure.

Mounted upon the axle at one side of the motor casing is shown a suitable balance wheel and upon the shaft at the other side of the casing a sprocket wheel 24: 0peratively connected with the delivery pulley 25 through intermediate sprockets 26 and 27. The sprockets 24c, 26, and 27 thus constitute a train of reducing gearing.

In Figs. 11 and 12 I show modified forms of easing. In the construction shown in Fig. 11 the outer ends of the side walls of the casing are outwardly curved to form a cylindrical casing and joined together as by bolts 28. in Fig. 12 one side of the piston chamber is formed by the outwardly curved side of one casement wall and the other half of the chamber by an outwardly curved plate 29 secured as by bolts 30 to the end of the adJaCent wall, the outer end of the plate 9 and opposite casing wall being connected as by bolts The plate 29 inlet and outlet ports, a plurality of collapsible piston blades supported to travel in said chamber, a back pressure wall movably positioned in said chamber adjacent the rear side of said inlet port and a collapsing guideway for said blade intermediate of said outlet port and back pressure wall. said guideway comprising two opposed blades converging toward the back pressure wall whereby to form an intermediate gradually contracting guideway for the blades.

2. A motor turbine of the class described consisting of a casing comprising side walls and a surrounding annular piston chamber formed with inlet and outlet ports upon opposite sides, a central supporting axle, a piston blade journaled upon said axle and extending upwardly between the side walls of said casing, a plurality of centrally hinged spaced collapsible piston blades carried by said supports and positioned within said chamber, and a collapsing guideway for said blades positioned between said ports, said guideway comprising a pair of opposed blades positioned within said chamber and converging toward the inlet port whereby to form an intermediate gradually converging passageway for said piston blades.

In testimony whereof I alfix my signature in presence of two witnesses.

ARTHUR V. SVVANBERG. lVitnesses H. SMITH, H. S. JOHNSON.

Copies of this patent may be obtained for five cents each, by addressing the Gommissioner of Patents, Washington, D. G. 

